Finding the Fourth Proportional to 31,109.46, 42,930.69 and 16,962.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.46 : 42,930.69 = 16,962.42 : x
2. Step 2: Convert to fraction form
   31,109.46/42,930.69 = 16,962.42/x
3. Step 3: Cross multiply
   31,109.46x = 42,930.69 × 16,962.42
4. Step 4: Simplify right side
   31,109.46x = 728,208,394.67
5. Step 5: Solve for x
   x = 728,208,394.67/31,109.46
6. Step 6: Final answer
   x = 23,407.94